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Cold seal lamination is an alternative to heat sealing. It can be used with certain types of plastic, including polypropylene and polyethylene. They are laminated together without the use of heat or adhesive, using pressure alone to seal the product. This is a popular choice for extremely sensitive materials, where the application of heat may cause problems.

While it is a popular, and powerful, method of sealing certain sensitive products, such as food, it isn’t advisable for most forms of sealing and packaging. Heat sealing machines are much more powerful, reliable and popular in medical, commercial and industrial settings.

What are the benefits of cold seal lamination?

There are a few key benefits to using this method over heat sealing or other types of sealing

  • It is much gentler on sensitive materials, making it ideal for food packaging
  • It doesn’t require the use of adhesive, which can be an issue with some types of plastic
  • It is a very quick process, which can be important in some industrial applications

What are the drawbacks of cold seal lamination?

There are also a few potential drawbacks to using this method

  • It isn’t as strong as some other types of sealing, meaning that it might not be suitable for products that will be under a lot of stress
  • It can be difficult to achieve a seal that is completely airtight, which can be important in some applications
  • The process can be messy, as it often results in excess sealant being pushed out from between the layers of plastic.